article{
    width: 1366px;
    height: 535px;
    /*background-color: #f7b290;*/
    margin: 0 auto;
}
.mid_img{
    width: 750px;
    height: 535px;
    margin: 30px auto 0px auto;
    background-image: url(../imgs/合作.png);
    background-repeat: no-repeat;
}
